To shut down a Backup Server, give the Backup Server’s name:
shutdown SYB_BACKUP
The default is with wait, so any dumps or loads in progress will complete before the Backup Server process halts. After you issue a shutdown command, no new dump or load sessions can be started on the Backup Server.
To see the names of the Backup Servers that are accessible from your Adaptive Server, execute sp_helpserver. Use the value in the name column in the shutdown command. You can shut down a Backup Server only if it is:
Listed in sysservers on your Adaptive Server, and
Listed in your local interfaces file.
Use sp_addserver to add a Backup Server to sysservers.